Pioneer PDP-504PE Service Manual page 98

1
BD3869AS (HD AUDIO ASSY : IC3502)
• Audio sound controller
A
Block DIagram
F B 2 2
B
T R E B L E
C
F T 1
Pin Function
No. Pin Name
1 FT1 CH1 Treble Filter Setting Pin
2 FT2 CH2 Treble Filter Setting Pin
3 IN1 CH1 Input Pin
4 LOUD1 CH1 Loudness Filter Setting Pin
D
5 IN2 CH2 Input Pin
6 LOUD2 CH2 Loudness Filter Setting Pin
7 CHIP Chip Select Pin
8 FILTER 1/2 VCC Pin
9 GND Ground pin
10 SDA I
11 SCL I
12 VCC Power Supply Pin
13 OUT1 CH1 Output Pin
E
14 OUT2 CH2 Output Pin
15 FB12 CH1 Bass Filter Setting Pin
16 FB11 CH1 Bass Filter Setting Pin
17 FB21 CH2 Bass Filter Setting Pin
18 FB22 CH2 Bass Filter Setting Pin
F
98
1
2
F B 2 1 F B 1 1 F B 1 2
1 8 1 7 1 6 1 5
f=80Hz
f=80Hz
B A S S
B A S S
f=15kHz
F R O N T
V O L U M E
f=15kHz
T R E B L E
1 2 3
F T 2 I N 1 L O U D 1
Function
2
C Communication Data Pin
2
C Communication Data Pin
2
3
O U T 2 O U T 1 V C C
1 4 1 3 1 2
M U T E
R E A R
V O L U M E
M U T E
R E A R
V O L U M E
V C C / 2
F R O N T
V O L U M E
4 5 6 7
I N 2 L O U D 2 C H I P
A pin for setting Treble frequency characteristic
A pin for Inputting sound signal to main volume
A pin for setting the loudness frequency characteristics and gain
A pin for Inputting sound signal to main volume
A pin for setting the loudness frequency characteristics and gain
Terminal of Slave address select of I
1/2 VCC. Voltage for power supply of signal system
A ground pin
2
Terminal of SDA of I C bus. ACKNOWLEDGE signal is outputted.
Data terminal
2
Terminal of SCL of I C bus. Clock terminal
Power Supply Pin
A pin for outputting a sound signal. Connect this pin to a rear stage
circuit through a coupling capacitor
A pin for setting Bass frequency characteristic and gain
PDP-504PU
3
4
S C L S D A
1 1 1 0
I 2 C B U S L o g i c
2 5 K
+
2 5 K
8 9
F I L T E R G N D
Pin Description
2
C Bus
4